HMC832LP6GETR datasheet(13/49 Pages) AD

13 / 49 page

HMC832

Data Sheet

Figure 27. Frequency Settling After Frequency Change, Autocalibration

Enabled, Loop Filter BW = 127 kHz (Type 1, See Table 12)

Figure 28. Frequency Settling After Frequency Change, Manual Calibration,

Loop Filter BW = 127 kHz (Type 1 in Table 12)

Figure 29. Typical VCO Sensitivity

Figure 30. Phase Settling After Frequency Change, Autocalibration Enabled,

Loop Filter BW = 127 kHz (Type 1, See Table 12)

Figure 31. Phase Settling After Frequency Change, Manual Calibration

Figure 32. Typical Tuning Voltage After Calibration (See the Loop Filter and

Frequency Changes Section)

2.2

2.4

2.6

2.8

3.0

3.2

TIME (µs)

100

120

140

160

SETTLING TIME TO < 10 DEGREES

PHASE ERROR

TIME (µs)

100

120

140

160

2.495

2.500

2.505

2.510

SETTLING TIME TO < 10 DEGREES

PHASE ERROR

NOTE: LOOP FILTER BANDWIDTH = 127kHz, LOOP

FILTER PHASE MARGIN = 61 DEGREES. THIS RESULT IS

DIRECTLY AFFECTED BY LOOP FILTER DESIGN. FASTER

SETTLING TIME IS POSSIBLE WITH WIDER LOOP FILTER

BANDWIDTH AND LOWER PHASE MARGIN.

0.66

1.30

2.00

3.30

TUNING VOLTAGE (V)

2.60

1587MHz

2013MHz

2854MHz

TUNING CAP 15

2453MHz

–200

–150

–100

–50

100

150

200

TIME (µs)

100

120

140

160

SETTLING TIME TO < 10 DEGREES

PHASE ERROR

–200

–150

–100

–50

100

150

200

TIME (µs)

100

120

140

160

SETTLING TIME TO < 10 DEGREES

PHASE ERROR

NOTE: LOOP FILTER BANDWIDTH = 127kHz,

LOOP FILTER PHASE MARGIN = 61 DEGREES.

THIS RESULT IS DIRECTLY AFFECTED B Y LOOP

FILTER DESIGN. FASTER SETTLING TIME IS

POSSIBLE WITH WIDER LOOP FILTER

BANDWIDTH AND LOWER PHASE MARGIN.

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

CALIBRATED AT +85°C, MEASURED AT –40°C

1330

1710 1900 2090 2280 2470 2660 2850 3040

1520

VCO FREQUENCY (MHz)

CALIBRATED AT +27°C, MEASURED AT +27°C

CALIBRATED AT –40°C, MEASURED AT +85°C

CALIBRATED AT +85°C, MEASURED AT +85°C

CALIBRATED AT –40°C, MEASURED AT –40°C

fMAX

fMIN

Rev. A | Page 12 of 48

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